package com.zhuangfei.hpuhelper.tools;

import java.io.File;  
import java.io.FileOutputStream;  
import java.io.PrintWriter;  
import java.io.StringWriter;  
import java.io.Writer;  
import java.lang.Thread.UncaughtExceptionHandler;  
import java.lang.reflect.Field;  
import java.text.DateFormat;  
import java.text.SimpleDateFormat;  
import java.util.Date;  
import java.util.HashMap;  
import java.util.Map;  
  






import com.hpu.bean.News;
import com.hpu.constants.HttpConstants;
import com.hpu.constants.ShareConstants;
import com.hpu.service.LogUploadService;
import com.hpu.tools.ShareTools;

import android.R.anim;
import android.annotation.SuppressLint;
import android.content.Context;  
import android.content.pm.PackageInfo;  
import android.content.pm.PackageManager;  
import android.content.pm.PackageManager.NameNotFoundException;  
import android.os.Build;  
import android.os.Environment;  
import android.os.Handler;
import android.os.Looper;  
import android.os.Message;
import android.util.Log;  
import android.widget.Toast;  
  
/** 
 * UncaughtException处理类,当程序发生Uncaught异常的时候,有该类来接管程序,并记录发送错误报告. 
 *  
 * @author user 
 *  
 */  
public class CrashHandler implements UncaughtExceptionHandler {  
      
    public static final String TAG = "CrashHandler";  
      
    //系统默认的UncaughtException处理类   
    private UncaughtExceptionHandler mDefaultHandler;
    //CrashHandler实例  
    private static CrashHandler INSTANCE = new CrashHandler();  
    private StringBuffer sb = new StringBuffer();  
    private LogUploadService logUploadService;
    
    //程序的Context对象  
    private Context mContext;  
    //用来存储设备信息和异常信息  
  
    /** 保证只有一个CrashHandler实例 */  
    private CrashHandler() {  
    }  
  
    /** 获取CrashHandler实例 ,单例模式 */  
    public static CrashHandler getInstance() {  
        return INSTANCE;  
    }  
  
    /** 
     * 初始化 
     *  
     * @param context 
     */  
    public void init(Context context) {  
        mContext = context;  
        //获取系统默认的UncaughtException处理器  
        mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();  
        //设置该CrashHandler为程序的默认处理器  
        Thread.setDefaultUncaughtExceptionHandler(this);  
        logUploadService=new LogUploadService(handler,mContext);
        
    }  
  
    @SuppressLint("HandlerLeak")
	Handler handler = new DefaultHandler(mContext) {
		@Override
		public void handleMessage(Message msg) {
			System.out.println("msg:"+msg);
			super.handleMessage(msg);
			switch (msg.what) {
			case HttpConstants.LOG_UPLOAD_SUCCESS:
				break;
			default:
				break;
			}
		};
	};
	
    /** 
     * 当UncaughtException发生时会转入该函数来处理 
     */  
    @Override  
    public void uncaughtException(Thread thread, Throwable ex) {  
    	if(ex!=null) ex.printStackTrace();
        if (!handleException(ex) && mDefaultHandler != null) {  
            //如果用户没有处理则让系统默认的异常处理器来处理  
            mDefaultHandler.uncaughtException(thread, ex);  
        } else {  
            try {  
                Thread.sleep(1000);  
            } catch (InterruptedException e) {  
                Log.e(TAG, "error : ", e);  
            }  
            //退出程序  
            android.os.Process.killProcess(android.os.Process.myPid());  
            System.exit(1);  
        }  
    }  
  
    /** 
     * 自定义错误处理,收集错误信息 发送错误报告等操作均在此完成. 
     *  
     * @param ex 
     * @return true:如果处理了该异常信息;否则返回false. 
     */  
    private boolean handleException(Throwable ex) {  
        if (ex == null) {  
        	
            return false;  
        }  
        //使用Toast来显示异常信息  
        new Thread() {  
            @Override  
            public void run() {  
                Looper.prepare();  
                Toast.makeText(mContext, "很抱歉,程序出现异常,将要退出..", Toast.LENGTH_LONG).show();  
                Looper.loop();  
            }  
        }.start();  
        //收集设备参数信息   
        collectDeviceInfo(mContext);  
        //保存日志文件   
        String log=saveCrashInfo2File(ex);  
        logUploadService.postLog(log);
        return true;  
    }  
      
    /** 
     * 收集设备参数信息 
     * @param ctx 
     */  
    public void collectDeviceInfo(Context ctx) {  
    	String number=(String)ShareTools.get(mContext, ShareConstants.STORE_USER, "default");
    	String name=(String)ShareTools.get(mContext, ShareConstants.STORE_USER_NAME, "default");
    	DateFormat sdf = new SimpleDateFormat("yyyyMMdd HHmmss");  
    	
    	sb.append("时间:"+sdf.format(new Date())+",日志开始\n");
    	sb.append("学号:"+number+",姓名:"+name+"\n");
    	sb.append("###################\n###################\n###################\n");
    	
    	sb.append("\n### app版本信息\n");
        try {  
            PackageManager pm = ctx.getPackageManager();  
            PackageInfo pi = pm.getPackageInfo(ctx.getPackageName(), PackageManager.GET_ACTIVITIES);  
            if (pi != null) {  
                String versionName = pi.versionName == null ? "null" : pi.versionName;  
                sb.append("appVersion="+versionName+"\n");
            }  
            
            sb.append("\n### 设备信息\n");
            sb.append("手机型号:"+ Build.MODEL+"\n");
            sb.append("SDK:"+ Build.VERSION.SDK+"\n");
            sb.append("系统版本:"+ Build.VERSION.RELEASE+"\n");
            
        } catch (NameNotFoundException e) {  
            Log.e(TAG, "an error occured when collect package info", e);  
        }  
        
    }  
  
    /** 
     * 保存错误信息到文件中 
     *  
     * @param ex 
     * @return  返回文件名称,便于将文件传送到服务器 
     */  
    private String saveCrashInfo2File(Throwable ex) {  
        
        sb.append("\n### 异常信息\n");
        Writer writer = new StringWriter();  
        PrintWriter printWriter = new PrintWriter(writer);  
        ex.printStackTrace(printWriter);  
        Throwable cause = ex.getCause();  
        while (cause != null) {  
            cause.printStackTrace(printWriter);  
            cause = cause.getCause();  
        }  
        printWriter.close();  
        String result = writer.toString();  
        sb.append("###################\n###################\n###################\n\n\n");
        sb.append(result);  
        
        return sb.toString();  
    }  
}
